Prediction Audit: Swansea City U21 vs Sheffield United U21 Prediction, Odds & AI Betting Tips

Swansea City U21

Aug 17, 2026 - 12:00

0 1.34

2 1.26

xG Accuracy: 56%

Sheffield United U21

The model missed the final outcome (Sheffield United U21 win 0–2).

The model had projected Swansea City U21 at 37.1%, but the full-time result went the other way.

Tracked markets vs full-time result

Prediction grade F

Each row compares the pre-match model lean to the full-time result.

Market Prediction Result Outcome
Over / Under 2.5 Under 2.5 Under 2.5 (2 goals) ✔ Correct
Both Teams To Score BTTS Yes No ✖ Incorrect
1X2 Swansea City U21 Sheffield United U21 ✖ Incorrect
Correct Score Insights 1-1, 1-0, 0-1, 2-1, 1-2 0-2 ✖ Incorrect

Model vs Closing Market

Outcome	Model	Closing Market	Difference	Signal
Swansea City U21	37.1%	43.4%	-6.3 pp	Market Higher
Draw	29.6%	22.3%	+7.3 pp	Model Higher
Sheffield United U21	33.3%	34.3%	-1.0 pp	Aligned

The statistical model estimates Draw's win probability at 29.6%, compared with the closing market's implied probability of 22.3%, a difference of 7.3 percentage points. This highlights a substantial disagreement between the model's assessment and the market consensus, rather than indicating which view is ultimately correct.

Model probabilities are generated from the statistical xG model using a Poisson distribution. Closing market probabilities are derived from consensus closing 1X2 odds after margin removal. Values represent implied probabilities rather than betting recommendations. Closing snapshot: PRE1.

After full time, the result was Sheffield United U21 win 0–2.

Market Assessment

The fair estimate shows a modest edge over current market pricing on Draw.

Monitor line movement before kickoff — not a betting recommendation.

Post Match Insights

What worked

Under 2.5 goals aligned with the xG profile

What failed

Both Teams To Score: model leaned BTTS Yes; match finished BTTS No
1X2: model leaned Swansea City U21; match finished Sheffield United U21

Market lesson

The closing market differed from the model on Swansea City U21 by 7.3 percentage points (29.8% vs model 37.1%) — in this case the market view proved closer.

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Prediction Timeline

How this prediction moved from forecast to full-time review.

Aug 17, 2026 · 11:59 UTC Forecast generated
- Model 1X2 · Swansea City U21 37.0% · Draw 29.6% · Sheffield United U21 33.4%
- xG · Swansea City U21 1.34 — Sheffield United U21 1.26
Aug 17, 2026 · 11:29 UTC Opening odds snapshot PRE30
- 1X2 odds · Swansea City U21 2.11 · Draw 4.11 · Sheffield United U21 2.67
- Implied 1X2 · Swansea City U21 43.4% · Draw 22.3% · Sheffield United U21 34.3%
- Bookmaker · Pinnacle
Aug 17, 2026 · 11:59 UTC Closing snapshot recorded PRE1
- 1X2 odds · Swansea City U21 2.11 · Draw 4.11 · Sheffield United U21 2.67
- Implied 1X2 · Swansea City U21 43.4% · Draw 22.3% · Sheffield United U21 34.3%
- Bookmaker · Pinnacle
Aug 17, 2026 · 12:00 UTC Kickoff
FT Full-time result Sheffield United U21 win · 0–2
FT Prediction missed 1X2 lean did not match full-time result
Archived Prediction review

Historical Snapshot

Frozen at kickoff — the model output as it stood before the match started.

Historical verdict: Observe

Historical Decision No Primary Bet

Outcome Missed

Pre-match metrics (historical context)

Prediction Reliability 75/100 · High

Validation: Pass

Evidence ★★★★★

No strong statistical edge
Direction agrees with model lean
Validation passed

Pricing proximity (inverse gap) 63/100

Betting Confidence 78/100

Validation Report

Immutable Snapshot

Prediction Time: Aug 11, 2026 · 02:05 UTC Snapshot ID: dp-3617014

Closing Odds 4.11

AI Fair Odds —

CLV Pending

Final Result Sheffield United U21 win · Swansea City U21 0–2 Sheffield United U21

Prediction ✖ Missed

Decision Grade F

Model Performance

This prediction contributes to:

Primary Bets ROI (180d): -100.0%

Review FAQ

How accurate was the prediction?: This page grades directional markets (1X2, Over/Under 2.5, BTTS) against the full-time result. The prediction grade reflects how many of those tracked markets matched reality.
What does xG Accuracy measure?: xG Accuracy compares the model's pre-match expected-goals profile to the actual scoreline — not whether every market hit. A strong directional review can coexist with a moderate xG accuracy score.
Why wasn't the exact score predicted?: Correct-score outcomes are low-probability tails even when the model reads the match profile well. We highlight top score bins for context; missing the exact line does not invalidate a directional review.
Does this improve the AI record?: Each finished match is logged in our validation pipeline. Aggregated hit rates and CLV studies are published separately — this page is the per-match audit trail.

Predictions are for informational purposes only. Always gamble responsibly and within your limits. Past performance does not guarantee future results.

AI match briefing

AI Match Summary

Pre-match snapshot for this fixture.

League: Professional Development League
Fixture: Swansea City U21 vs Sheffield United U21
Kickoff: 2026-08-17 12:00:00
1X2 (model): Home 37.0% · Draw 29.6% · Away 33.4%
xG (showing): Swansea City U21 1.34 — Sheffield United U21 1.26 (total xG ≈ 2.6)
Value headline: None — no positive EV on tracked lines at current best prices (same as the decision block: no default bet).
Structural leans (not bets): Structural lean (model): O/U 2.5 Under 2.5 (Under 2.5 51.8% · Over 2.5 48.2%); BTTS Yes (Yes 54.5% · No 45.5%) Value lean (pricing): O/U 2.5 Under 2.5; BTTS Yes
BTTS (model): Yes 54.5% · No 45.5%
Correct score (top bin): 1-1 (12.5%)

When book depth is thin or odds are missing, EV may be unavailable even though the model still prefers one side on totals or BTTS — wait for cleaner prices or skip.

Prefer skipping to over-staking when the engine is honest about missing edge.

Historical Recommendation

Historical Decision: No Primary Bet

Outcome: Missed — Pre-match 1X2 lean did not match the full-time result.

Risk Factors Considered Before Kickoff

Price movement: implied probabilities and EV move with odds.
Sample / data gaps: low-information leagues widen forecast bands.
In-play state: goals and red cards are not modelled here.
Scoreline variance: the most likely scoreline is still usually a low absolute probability outcome (often well below 20%).

Last Updated

October 01, 2026 (UTC)

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Professional Development League — Standings

#	TEAM	MP	W	D	L	PTS
1	Bolton Wanderers Res.	5	5	0	0	15
2	Bristol City U21	5	2	3	0	9
3	Swansea City U21	6	3	0	3	9
4	Fleetwood Town U21	5	3	0	2	9
5	Cardiff City U21	5	2	2	1	8
6	Sheffield United U21	5	2	1	2	7
7	Barnsley U21	5	2	1	2	7
8	Peterborough United U21	4	2	1	1	7
9	Sheffield Wednesday U21	5	1	3	1	6
10	Huddersfield Town U21	3	2	0	1	6
11	Charlton Athletic U21	5	1	3	1	6
12	Wigan Athletic U21	6	1	3	2	6
13	Colchester United U21	5	2	0	3	6
14	Coventry City U21	4	1	1	2	4
15	Queens Park Rangers U21	6	1	1	4	4
16	Hull City U21	3	0	1	2	1
17	Millwall U21	3	0	0	3	0

#	TEAM	MP	GS	GC	+/-	PTS
1	Bolton Wanderers Res.	5	17	2	+15	15
2	Wigan Athletic U21	6	15	19	-4	6
3	Cardiff City U21	5	13	5	+8	8
4	Bristol City U21	5	13	8	+5	9
5	Colchester United U21	5	13	18	-5	6
6	Swansea City U21	6	11	9	+2	9
7	Barnsley U21	5	11	13	-2	7
8	Queens Park Rangers U21	6	11	16	-5	4
9	Charlton Athletic U21	5	9	8	+1	6
10	Coventry City U21	4	9	10	-1	4
11	Sheffield Wednesday U21	5	8	6	+2	6
12	Peterborough United U21	4	8	11	-3	7
13	Huddersfield Town U21	3	7	5	+2	6
14	Sheffield United U21	5	7	7	0	7
15	Fleetwood Town U21	5	6	10	-4	9
16	Hull City U21	3	4	9	-5	1
17	Millwall U21	3	2	8	-6	0